Hekryk porter



H. K. PORTER. Top-Prop for Carriages.

No. 222,531. Patented Dec. 9, 1879.

",FETERS, PHOYDAJTNOGRAPNER, WASIIXNGTDN D C PATENT OEEIoE.

HENRY K. PORTER, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT INTOP-PRoPs FOR C'ARRIAGES.

l Specilication forming partofy Letters Patent N0. 222,531, dated December 9, 1879; application filed May 31, 1878.

' j To all whom "it may concern.-

3 i Be it known that I, HENRY K. PORTER, of 1 Boston, lState of Massachusetts, have invented Improvements in Carriage-fllop Irons, of which the following is a specification. i This invention relates 5to the top props which-are secured tothe bows cfa turn-down L` `top-carriage, and upon which the top joints )are pivoted; and thexinvention consistsv in :forming the props with, a bowplate having a Asocket with a square cross-section both internally and externally, andastud or start having y asquaretenon to t such socket, and being se`vv cured thereinv by a dra-ttpin which passes through the Walls of such socket and throughl ,the tenon, such stud being, shouldered upon g the socket, and having, an` ,outer shoulder 'i against which anv interiorshoulder of the eolscrews the joint upon the'stud`,vall as will be 1 fully described. f .A Figure l is a horizontal section, showing (both the joint `and Vstud in longitudinal secwtion. yFig. 2 is a frontview ot'fth'e bow-plate, "showing the studV orprop inserted therein. j Fig. 3 is a plan view,` of,` lthe" base or inner end *i of the collar. f Fig-.eis an `under or backside' ffiew of the bow-plate, showing'fthe stud inerted in the socket. In these views, e represents Ia cross-section ot` one of the bows. j'is `thebow-plate.` g is .the square boss formed thereon.'v his the stud or prop, which embraces itsrmembers 1 2 3,3 q being the square tenoninsertedvin boss g, and 1 "which issecuredtherein bythe pin o, which assesthroughthe bossand "stud,as shown Fig, 1`."1"2"is the-enlargedgportion, which oulders against vboss -g' and affords a bearing 'or the interior' shoulder-of collar k, as shown "lar is forced by thel action ot'the nut which v Fig. 1 at j,1being the outcrfround portion on which the eyep of the joint is secured, and on which it vibrates as the top is opened or closed. i is the propnut which secures the joint in place. In'Fig. 3, Z is the square portion ot the hole in collar k, which lits on boss g. m is the round hole which receives the round portion of the stud, and n is the ange of the collar.

The stud l1, maybe round in its entire length,-

'such boss and secured therein .by 'pin o, andthe inelosingsleeve k, all substantially as described and shown.

2. In a top-prop, the bow-plate f, with the square hole, the stud h, with the member 3 titting such hole, and the enlarged square meniber 2, andcollar 7c, withan interior shape, f1tting such'boss and member 2 ofthe stud, substantiallyas specified. v

4l. In a topprop, the combination of bow plate f, having the boss g, vWith a square eX- `terior and interior, the square stud h fitting therein, and the sleeve k, With an interior litting to such boss and stud, substantially ais specified.

HENRY K. PORTER.

Witnesses: A

T. W. PORTER, EUGENE HUMPHREY. 

